net/ip6_tunnel: Prevent perpetual tunnel growth
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.8epss 0.1%
probabilidade de exploração
0.1%top 96% das CVEs
exploração observada
nãonenhuma fonte reporta
In the Linux kernel, the following vulnerability has been resolved:
net/ip6_tunnel: Prevent perpetual tunnel growth
Similarly to ipv4 tunnel, ipv6 version updates dev->needed_headroom, too.
While ipv4 tunnel headroom adjustment growth was limited in
commit 5ae1e9922bbd ("net: ip_tunnel: prevent perpetual headroom growth"),
ipv6 tunnel yet increases the headroom without any ceiling.
Reflect ipv4 tunnel headroom adjustment limit on ipv6 version.
Credits to Francesco Ruggeri, who was originally debugging this issue
and wrote local Arista-specific patch and a reproducer.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/10fe967efe73c610e526ff7460581610633dee9chttps://git.kernel.org/stable/c/11f6066af3bfb8149aa16c42c0b0c5ea5b199a94https://git.kernel.org/stable/c/21f4d45eba0b2dcae5dbc9e5e0ad08735c993f16https://git.kernel.org/stable/c/402b6985e872b4cf394bbbf33b503947a326a6cbhttps://git.kernel.org/stable/c/48294a67863c9cfa367abb66bbf0ef6548ae124fhttps://git.kernel.org/stable/c/566f8d5c8a443f2dd69c5460fdec43ed1c870c65https://git.kernel.org/stable/c/b6eb25d870f1a8ae571fd3da2244b71df547824bhttps://git.kernel.org/stable/c/eeb4345488672584db4f8c20a1ae13a212ce31c4